So I started this 25 gallon tank about 6 months ago, and I’ve never struggled so much in my life! Substrate is aquatic pond compost topped with sand. At first I had hell getting plants to grow, then they finally took hold. About a month ago I started having problems with staghorn and bba. Then about 2 weeks ago the leafy green plants in the back slowly started not looking great and slowly dropping leaves.
im currently running co2, and auto dosing an all in one fert, and potassium about every 3 days. I’m using a fluval plant light running about 8.5 hours a day.
based on my plants appearance what does it look like is going on??